18417415121 has 8 divisors (see below), whose sum is σ = 21054604800. Its totient is φ = 15781758048.

The previous prime is 18417415111. The next prime is 18417415129. The reversal of 18417415121 is 12151471481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18417415121 - 2¹⁰ = 18417414097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18417415129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357281 + ... + 405566.

It is an arithmetic number, because the mean of its divisors is an integer number (2631825600).

Almost surely, 2^18417415121 is an apocalyptic number.

It is an amenable number.

18417415121 is a deficient number, since it is larger than the sum of its proper divisors (2637189679).

18417415121 is an equidigital number, since it uses as much as digits as its factorization.

18417415121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766303.

The product of its digits is 8960, while the sum is 35.

The spelling of 18417415121 in words is "eighteen billion, four hundred seventeen million, four hundred fifteen thousand, one hundred twenty-one".